ATI TEAS 7
Mometrix TEAS 7 science practice test
1. Following successful heart transplant surgery, the patient's body will need to take medications to:
- A. Suppress the immune system and prevent rejection of the new heart.
- B. Reduce overall blood pressure.
- C. Dissolve any remaining blood clots.
- D. Stimulate the growth of new heart tissue.
Correct answer: A
Rationale: After heart transplant surgery, the patient's body will need to take medications to suppress the immune system and prevent rejection of the new heart. This is essential to ensure that the body does not identify the transplanted heart as a foreign entity and mount an immune response against it, which could lead to transplant rejection and failure. Choices B, C, and D are incorrect because post-heart transplant medications primarily focus on preventing rejection by suppressing the immune system, rather than reducing blood pressure, dissolving blood clots, or stimulating the growth of new heart tissue.
2. Which of the following statements about fungi is FALSE?
- A. They can be unicellular or multicellular
- B. They are all parasitic and cause disease in humans
- C. They play a vital role in decomposition and nutrient cycling
- D. Some are used in food production, like mushrooms
Correct answer: B
Rationale: A) This statement is true. Fungi can exist in both unicellular (yeast) and multicellular (molds and mushrooms) forms. B) This statement is false. While some fungi can be parasitic and cause diseases in humans, not all fungi exhibit this behavior. Many fungi are beneficial and play essential roles in ecosystems. C) This statement is true. Fungi are crucial for decomposition and nutrient cycling in ecosystems. They break down organic matter and recycle nutrients back into the environment. D) This statement is true. Some fungi, like mushrooms, are used in food production and are consumed by humans.
3. Which organ produces insulin?
- A. Pancreas
- B. Liver
- C. Stomach
- D. Kidneys
Correct answer: A
Rationale: Insulin is a hormone that regulates blood sugar levels by facilitating the uptake of glucose into cells for energy production or storage. The pancreas, located behind the stomach, is the organ responsible for producing insulin. Within the pancreas, specialized cells known as beta cells synthesize and secrete insulin in response to changes in blood glucose levels. The liver, although vital for metabolism, does not produce insulin. Similarly, the stomach and kidneys do not play a role in insulin production. Hence, the correct answer is the pancreas.
4. Which of the following functions corresponds to the parasympathetic nervous system?
- A. It stimulates the fight-or-flight response.
- B. It increases heart rate.
- C. It stimulates digestion.
- D. It increases bronchiole dilation.
Correct answer: C
Rationale: The parasympathetic nervous system is often referred to as the 'rest and digest' system because it promotes activities that occur when the body is at rest, such as digestion. This system helps stimulate digestion by increasing gastrointestinal motility, secretion of digestive enzymes, and blood flow to the digestive organs. Choices A, B, and D are incorrect because they are functions associated with the sympathetic nervous system, which is responsible for the 'fight-or-flight' response, increasing heart rate, and dilating bronchioles to facilitate more oxygen intake during stressful situations.
5. What is the main role of the large intestine in digestion?
- A. Absorbing proteins
- B. Absorbing carbohydrates
- C. Absorbing fats
- D. Absorbing water
Correct answer: D
Rationale: The main role of the large intestine in digestion is to absorb water. When food reaches the large intestine, most nutrients have already been absorbed by the small intestine. In the large intestine, water is absorbed from the remaining undigested food, helping to form solid waste (feces). Absorbing proteins, carbohydrates, or fats primarily occurs in the small intestine, not in the large intestine. Therefore, options A, B, and C are incorrect.
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